1 Samuel 2:35

For the Lord raises up a faithful priest for Himself, because indeed the highest position demands for its care one who not only rightly understands, but who faithfully ministers. Moreover, he will then be able to minister rightly when he recognizes the measure of his ministry from sacred Scripture. Hence, when a faithful priest is promised, he is declared to act according to the heart and soul of Almighty God. For what do we understand by the heart and soul of God, if not His sacred Scripture? For with the heart we think toward deliberation, and with the soul we are moved toward love. Since, therefore, in sacred Scripture we recognize the counsels of Almighty God, and there we find the love with which He loved the human race, that same Scripture reasonably designates His heart and soul. Accordingly, Almighty God chooses for His ministry the priest who acts according to His heart and soul, because indeed no one else is worthy of so great an office unless he has learned His will from sacred Scripture and devotes what he has learned to the benefit of his neighbors through the zeal of charity. But we must still attentively consider what is said: (Verse 35.) 'According to my heart and my soul.' For certain precepts are found in Sacred Scripture which are indeed precepts of God's dispensation, and not of God's love. If the priest who is promised to be raised up were to fulfill these, he would indeed act according to the heart of God, and not according to His soul, since he would have rendered in works the counsel of divine dispensation, and not the precept of love. Were not those commandments of His, of which He speaks, saying: "I gave them statutes that were not good" (Ezek. 20:25), from the dispensation of God? And when the Pharisees disputed with Truth Himself about giving a bill of divorce, they heard: "Because of your hardness of heart Moses gave you the law" (Matt. […]

"And I will raise up for myself a faithful priest, who will act according to my heart, etc." [1 Samuel 2:35] What the prophet says, speaking to Eli in the person of God: And I will raise up for myself a faithful priest, who will …

And I will build a faithful house for him, etc. The faithful house, which is built for the faithful priest on the rock foundation by the wise man, is the Church; which walked before Christ all the days of this present life, and never will …

38. For when the sons of Eli were dead, the Lord raised up a faithful priest for Himself, because when the leaders of the ancient people were destroyed in their faithlessness, He chose elect ones to carry out the ministry of our redemption. He is indeed called a faithful one who was taken up, because the old one, whom he succeeded, was rejected on account of unfaithfulness. And because that faith of his is ascribed to the praises of the priest, which works through love, the very works of love are indicated by the words that follow.

Raise a priest - Of another line, as it necessarily implied by the total removal of that office from Eli's line. The person designed is Zadok, one eminent for his faithfulness to God, and to the king, who, when Abiather, the last of Eli's line, was deposed by Solomon, was made high-priest in his stead.